These are Adafruit’s Arduino Uno Proto boards. 

I have many of them; they are $0.99 EACH.  Just the board, no parts.  Feel free to make an offer on multiples.

Some boards are blue, some green.  Some have sets of 3 common connections in the middle, some have sets of 5 common connections.  Feel free to specify which you want. If you don’t specify, I will send what happens to come up next.

Shipping for 1 board will be $1.95.  Shipping for 10 or more boards will not exceed $5.80